public class ConservationDemo {
    public static void main(String[] args) {
        int a = 10;
        //随堂练习
        byte b1 = 5;
        //这块儿怎么处理才能好使???
        byte b2 = (byte)(b1 + a);
        int b3 = b1 + a;

        byte b4 = (byte)130;
        System.out.println(b4);  //b4结果是多少?  回环现象


        //char ASCII
        char c = 'a' + 10;
        int i = 'a' + 10;
        System.out.println(c);
        System.out.println(i);
    }
}
